The Impact of Conversion on the Glass Transition Temperature – Part Four: Universal Nature of Tg versus Conversion

This post will further explore multiple studies that have demonstrated the universal nature of the Tg-conversion relationship. The seminal paper by Professor John Gillham and his Ph.D. students was published in 1990 that very clearly articulated the concept of how the fractional conversion impacts the glass transition temperature during curing as shown in Figure 1. Figure 1. Tg is plotted as a function of fractional conversion from reference [1]. Additionally, as discussed in the last post, the.